Question

An unknown number y is 20 more than an unknown number x. The number y is also x less than 2. The equations to find x and y are shown below:
y = x + 20
y = –x + 2

Which is a correct step to find x and y?


Multiply the equations to eliminate y.

Add the equations to eliminate x.

Write the points where the graphs of the equations intersect the x-axis.

Write the points where the graphs of the equations intersect the y-axis.

Answer 1

Answer: Add the equations to find the sum of x

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Answer 2

Add the equations to eliminate x.