SOLUTION: is (3,4) a solution of y= -x + 7?

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Question 106862: is (3,4) a solution of y= -x + 7?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
y=-x%2B7 Start with the given equation


Let's test the first solution (3,4):


%284%29=-%283%29%2B7 Plug in x=3 and y=4


4=4 Simplify. Since the two sides of the equation are equal, this means (3,4) is a solution to y=-x%2B7



Now let's graph the equation y=-x%2B7 and plot the point (3,4)

Here we can see that the point (3,4) lies on the line. So this shows that (3,4) is a solution to y=-x%2B7 which verifies our answer.