Apair of equations is shown below: 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) plz use subsitution

Remark
The very easiest way to do this is by substitution. The ys are isolated on the left. When you equate what's on the right, you can solve this for 1 variable, the xs.

Substitute and solve
8x - 9 = 4x -1             Subtract 4x from both sides.
8x - 4x - 9 = - 1 
4x - 9 = - 1                Add 9 to both sides.
4x = - 1 + 9
4x = 8                        Divide by 4
x =   8/4
x = 2

Solve for y
Use either equation to solve for y.
y = 4x - 1  
y = 4(2) - 1
y = 8 - 1
y = 7

Answer
The equations intersect at (2,7)

Part  B
See the graph below. Notice the intersect point.

Absolute value graph shifted point 5 up