SOLUTION: Determine which of the ordered pairs does NOT lie on the graph of the function f(x)= - 2x + 5 A. (1,3) B. (5, -5) C. (4, -3) D. (0,4) Please solve & explain this

Question 258098: Determine which of the ordered pairs does NOT lie on the graph of the function
f(x)= - 2x + 5
A. (1,3)
B. (5, -5)
C. (4, -3)
D. (0,4)
Please solve & explain this so I can solve the other 14 answers.
Thank you
Dawn

Found 3 solutions by scott8148, richwmiller, drk:
Answer by scott8148(6628)   (Show Source): You can put this solution on YOUR website!
the ordered pairs are (x , f(x)) ___ f(x) is another name for y

so just "plug in" the values and see if they work

A. 3 = -2(1) + 5 ___ OK

check the rest...
Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
the first number in the ordered pair is x and the second is f(x) or y
just plug in each ordered pair until you find one that does NOT work.
f(x)=-2x+5
try 1,3
f(x)=-2(1)+5
f(x)=-2+5
f(x)=3
(1,3)
That works
You are looking for the f(x) doesn't equal the y of (x,y)
You will get something like 2=4 or something that does equal the other that doesn't work
Answer by drk(1908)   (Show Source): You can put this solution on YOUR website!
Hi, here is the original question:
f(x)= - 2x + 5
A. (1,3)
B. (5, -5)
C. (4, -3)
D. (0,4)
First, replace f(x) with y. To solve these, remember that the letter goes away and the number comes to stay. Instead of x, put in the number in the x part of the coordinate and do the same for y. Doing each one, we get
A. (1,3) -> 3 = -2(1) + 5 -> 3 = 3 [true]
B. (5, -5) -> 5 = -2(-5) + 5 -> 5 = 15 [false]
C. (4, -3) -> -3 = -2(4) + 5 -> -3 = -3 [true]
D. (0,4) -> 4 = -2*0 + 5 -> 4 = 5 [false]
So, we see that B and D are false and that means (5,-5) and (0,4) DO NOT lie on the line.
RELATED QUESTIONS
Which of the following ordered pairs is on the graph that represents the algebraic... (answered by ewatrrr)
Determine which of the ordered pairs satisfies the given equation: y= 2/5x - 1/5 a) (answered by richwmiller)
If(-4,-5) is a point on graph of f(x) identify which ordered pairs must also be on the... (answered by CubeyThePenguin)
given h(x)= square root of x and g{ (1,-2) (2,2) (3,-4) (4,3) a)determine a point which (answered by lynnlo)
1.Determine which,if any,of the given ordered pairs is a solution of 5x+2y=13. a)... (answered by josgarithmetic)
Please can someone help me solve the following. I would really appreciate some help.... (answered by stanbon)
9. Determine which of the four ordered pairs does not satisfy the given equation. Work... (answered by solver91311)
Which set of ordered pairs does NOT represent a function? A) (0, 1), (2, 2), (4, 8),... (answered by acw1213)
Which of the ordered pairs is a solution for the equation 5x � 4y = 20? A) (�4, �5) (answered by josmiceli)
1. Determine whether the given quadratic function has a minimum value or maximum value.... (answered by Alan3354)