Question

An unknown number y is 15 more than an unknown number x. The number y is also x less than 8. The equations to find x and y are shown below.

y = x + 15
y = −x + 8

Which of the following statements is a correct step to find x and y?

A) multiply the equations to eliminate y
B) add the equations to eliminate x
C) write the points where the graph of the equations intersect the x-axis
D) write the points where the graph of the equations intersect the y-axis

Answer 1

you use elimination

Answer 2

how do i do that @Mehek14

Answer 3

you add both equations which cancels out one of the variable

Answer 4

then you solve for the remaining variable, find the value of it, substitute it in the equations and find the value of the variable you canceled out in the first process

Answer 5

im so confused @Mehek14

Answer 6

you solve by eliminating the variable by adding

Answer 7

so which answer choice would that be?

Answer 8

im kinda thinking b ?

Answer 9

@Mehek14

Answer 10

yup ☺

Answer 11

Thank so much @Mehek14

Answer 12

your welcome \(\Huge \ddot \smile\)