SOLUTION: use point slope formula to write an equation of the line given the following information. write answer in slope intercept form slope -3/4 line passes through point (5,0) simpl

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Question 212891: use point slope formula to write an equation of the line given the following information. write answer in slope intercept form
slope -3/4 line passes through point (5,0)
simplify fraction answers

Found 2 solutions by drj, jojo14344:
Answer by drj(1380) About Me  (Show Source):
You can put this solution on YOUR website!
Use point slope formula to write an equation of the line given the following information. Write answer in slope intercept form slope -3/4 line passes through point (5,0). Simplify fraction answers.

Step 1. The slope m is given as

m=%28y2-y1%29%2F%28x2-x1%29

Step 2. Let (x1,y1)=(5,0) or x1=2 and y1=1 . Let other point be ((x2,y2)=(x,y) or x2=x and y2=y.

Step 3. Now we're given m=-3%2F4. Substituting above values and variables in the slope equation
m yields the following steps:

m=%28y2-y1%29%2F%28x2-x1%29

-3%2F4=%28y-0%29%2F%28x-5%29

Step 4. Multiply x-5 to both sides to get rid of denominator on right side of equation.

-3%28x-5%29%2F4=y-0

-3x%2F4%2B15%2F4=y

y=-3x%2F4%2B15%2F4

Note: the above equation can be rewritten as
3x%2B4y=15
And the graph is shown below which is consistent with the above steps.

Solved by pluggable solver: DESCRIBE a linear EQUATION: slope, intercepts, etc
Equation 3+x+%2B+4+y+=+15 describes a sloping line. For any
equation ax+by+c = 0, slope is -a%2Fb+=+-3%2F4.
  • X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. 15/3 = 5.
  • Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is 15/4 = 3.75.
  • Slope is -3/4 = -0.75.
  • Equation in slope-intercept form: y=-0.75*x+3.75.
graph%28+500%2C+500%2C+5-8%2C+5%2B8%2C+3.75-8%2C+3.75%2B8%2C+-0.75%2Ax%2B3.75+%29+



I hope the above steps were helpful.

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Good luck in your studies!

Respectfully,
Dr J


Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


Point Slope Formula: %28x-x%5B1%5D%29m=y-y%5B1%5D
Given:
m=-3%2F4
(x%5B1%5D,y%5B1%5D) = (5,0)

Substitute to our formula:
%28x-5%29%28-3%2F4%29=y-0 ---> highlight%28y=%28-3%2F4%29x%2B15%2F4%29, Answer in Slope Intercept Form

Let's check,
We know Y-Intercept is b in y=mx%2Bb = 15/4

Fy=0:
0=%28-3%2F4%29x%2B15%2F4 ---> %283%2Fcross%284%29%29x=15%2Fcross%284%29
cross%283%29x%2Fcross%283%29=cross%2815%295%2Fcross%283%29
red%28x=5%29, X-intercept (5,0)



Thank you,
Jojo