Question

URGENT HELP PLEASE

A pair of equations is shown below:


y = 7x − 9

y = 3x − 1


Part A: In your own words, explain how you can solve the pair of equations graphically. Write the slope and y-intercept for each equation that you will plot on the graph to solve the equations.


Part B: What is the solution to the pair of equations?

Answer 1

slope1 : 7, slope 2 = 3 solution: (2,5)

Explanation:

I simplify some steps

pair 1: x1 0 2

y1 -9 5 ........ -9, y1 intercept

pair 2: x2 0 2

y2 -1 5 ........ -1, y2 interept

2 pairs meet at (2,5)

y=7x-9 ......A

y=3x-1 ......B

A-B 0=4x-8

4x=8

x=2

y=5

slope 1=( y2-y1) / (x2-x1) = (5- -9)/(2-0) = 14/2 =7

slope 2 = (5 - -1) / (2 - 0) = 6/2 = 3