Y= 8x − 9
y = 4x − 1

part a: explain how you will solve the pair of equations by substitution or elimination. show all the steps and write the solution. (5 points)

part b: if the two equations are graphed, at what point will the lines representing the two equations intersect? explain your answer. (5 points)

Part A: x=2, y=7 for both lines

Part B: They will intercept at point (2,7)

Step-by-step explanation:

Part A)

We can solve the equation by substitution or elimination. We will use substitution:

 (1)

(2)

we can substitute equation (1) into equation (2):

We can solve for x:

We can substitute x into equation (1) and (2) to determine the y values at x=2

Line 1: and therefore at x=2, y=7

Line 2: and therefore at x=2, y=7

Part B)

If the the two equations are graphed thay will intersect at point (2,7). The gradient and y-intercept will be different but they will intersept at the same point when graphed.

7

step-by-step explanation: