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16 votes
PLEASE PLEASE PLEASE!!!! I NEED HELP

PLEASE PLEASE PLEASE!!!! I NEED HELP-example-1
User RumbleFish
by
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1 Answer

13 votes
13 votes

Answer:

(9, 76)

Explanation:

y = 7x + 13

y = 3x + 49

================

We can solve this in either of two ways: Mathematically and graphically.

Math

Set the equations equal to each other (after all, y does equal y).

7x + 13 = 3x + 49

4x = 36

x = 9

Then use x = 9 to solve for y:

y = 7x + 13

y = 7(9) + 13

x = 76

Graph

Plot the two equations. I use Desmos - its online and free. The intersection of the two lines reveals to answer: (9,76). See the attachment.

PLEASE PLEASE PLEASE!!!! I NEED HELP-example-1
User Jellyfish
by
2.8k points