# Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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 Algebra: Graphs, graphing equations and inequalities Solvers Lessons Answers archive Quiz In Depth

 Question 179332: Dental services. The national cost C in billions of dollars for dental services can be modeled by the linear equation C = 2.85n + 30.52, where n is the number of years since 1990 a) Find and interpret the C-intercept for the line. b) Find and interpret the n-intercept for the line. Click here to see answer by Mathtut(3670)

 Question 179330: Demand equation. Helen’s Health Foods usually sells 400 cans of ProPac Muscle Punch per week when the price is \$5 per can. After experimenting with prices for some time, Helen has determined that the weekly demand can be found by using the equation d = 600 - 40p, where d is the number of cans and p is the price per can. a) Will Helen sell more or less Muscle Punch if she raises her price from \$5? b) What happens to her sales every time she raises her price by \$1? Click here to see answer by Mathtut(3670)

 Question 179404: I do not understand how to solve the compound inequality. Then graph the solution set. The problem d-4>3 or d-4≤1 Click here to see answer by vleith(2825)

 Question 179415: can someone help me solve this graphing problem please Find the slope of a line connecting the points whose coordinates are (-1, 2), (-3, -7) Click here to see answer by jim_thompson5910(28593)

 Question 179312: 9-8y>5-7y+2 4(2y-3)>28 7(5y-2)>6(6y-1) 1- 1 2/3y _> 9/5- y/5 + 3/5 Click here to see answer by jim_thompson5910(28593)

 Question 179483: Solve each of the following problems by using an inequality. Ronald wants to sell his car through a broker who charges a commission of 10% of the selling price. Ronald still owes \$11,025 on the car. Ronald must get enough to at least pay off the loan. What is the range of the selling price? Click here to see answer by josmiceli(9671)

 Question 179570: find the x and y intercept of the equation 2x-5y=20 Click here to see answer by checkley77(12569)

 Question 179575: Hi. I'm having trouble finding the slope of the line determined by each equation in this particular problem. 2x-y=6 thanks. H.C. Click here to see answer by jim_thompson5910(28593)

 Question 179700: Find the equation in slope-intercept form, of the line that passes through the points (3, 6) and (-7, -3); write equation in slope-intercept form. Show the steps Click here to see answer by HyperBrain(694)

 Question 179590: Solve the system of equations using the addition (elimination) method. If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is "no solution" or "infinitely many solutions" and state how you arrived at that conclusion. 3x - 11y = 9 -9x + 33y = -27 Click here to see answer by checkley77(12569)

 Question 179894: Solve by any method: x=7/2y+5 2x-7y=13 a(-6,11) b (5,13) c (-5,11) d (-4,10) e the system is inconsistent f the system are dependent Click here to see answer by Fombitz(13828)

 Question 179956: Calculate the shortest distance from the given line and point povided. 2x-y=3 (2,3) I subtracted 2 from 2x-y=3 and got -y=-2+3, I made them postitive and got y=1 I plugged 2 in for x then got seven, I put 2(1)-7=3 and recieved 5. I was told this is incorrect but i dont know any other way to do it...any help would be helpful. Click here to see answer by Mathtut(3670)

 Question 179988: I need help with this problem by solving each system substitution method please y=-2/5x-2 y=3/2x+17 Click here to see answer by stanbon(57307)

 Question 180197: Find the x- and y- intercepts and then use them to graph 2x-3y=12 thanks for the help!!! Click here to see answer by Fombitz(13828)

 Question 180199: graph 3x-2y-8 by using the slope and the y- intercept. Hint-- be sure to use the equation in slope-intercept for first. thanks for the help!!!!!! Click here to see answer by Mathtut(3670)

 Question 180249: For line graphs and bar graphs, the values measured by the vertical axis depend on the values measured by the _____ axis. Click here to see answer by Mathtut(3670)

 Question 180256: how do you do consistent andinconsistent systems problems Click here to see answer by Mathtut(3670)
 Question 180256: how do you do consistent andinconsistent systems problems Click here to see answer by solver91311(16877)

 Question 180389: please help me with problem You pay \$54 for each of 2 tires which were marked 25% off. After the sale is over, you realize you need 2 more. How much will each of the tires cost at the regular price? Click here to see answer by Mathtut(3670)

 Question 180464: over the years from 1997 when it was \$1.26, to 2006 when it was \$2,31,gas prices have gone up. Using the coordinates (1997, 1.26) & (2006, 2.31) to find the slope (or rate of change) between the two points. I know that slope or m = y2 - y1 divided by x2 - x1. pls solve and describe how you arrived at answer Click here to see answer by stanbon(57307)

 Question 180554: this question says to graph the equation. the equation is 3(y+4) =-2x i decided to put it into slope intercept form and then graph it. i'm not completely positive if i did it right though. first, i used the distributive property to make the equation 3y + 12 = -2x then i subtracted 12 from both sides making it now 3y = -2x -12 then i divided 3 to everything making it now y= -2/3x - 7/3 so in conclusion i had m= -2/3 and b= -2 1/2 i'm not sure if that's right, but i needed to make sure. if i know this is right, then i'm pretty sure i could finish the rest of them. thanks :) Click here to see answer by bandgeek1749(3)

 Question 180568: i don't get how to do this at all: it says to graph the equation: 6y+5 = 5y+3 Click here to see answer by mgmoeab(28)

 Question 180576: i don't get how i would get this equation into something that i could graph and how to graph it. y=3x-5 Click here to see answer by jim_thompson5910(28593)

 Question 180575: how do you? graph inequalities in two variables. EX: x+y>1 Click here to see answer by Mathtut(3670)

 Question 180580: i don't get how i would solve this equation into a form that i can graph it and how to graph it : 5y+3=-5 Click here to see answer by Mathtut(3670)

 Question 180599: I need help with this problem I have to solve it myself but keep getting it wrong Solve for a: L = 2d + t(a + r) Click here to see answer by Fombitz(13828)