SOLUTION: Complete the ordered pairs for the equation y = 7x + 21. ( , 0), (2/7, ), (0, ), (-2/7, )

Question 76816: Complete the ordered pairs for the equation y = 7x + 21.

( , 0), (2/7, ), (0, ), (-2/7, )
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
Complete the ordered pairs for the equation y = 7x + 21.

( , 0), (2/7, ), (0, ), (-2/7, )
Ordered pairs are in alphabetical order (x,y)
For ( ,0), let y=0 and solve for x:
0=7x+21
0-21=7x+21-21
-21=7x
-21/7=7x/7
-3=x The ordered pair is (x,y)=(-3,0)
:
for (2/7, ) let x=2/7 and solve for y
y=7(2/7)+21
y=2+21
y=23 The ordered pair is (x,y)=(2/7,23)
:
for (0, ) let x=0 and solve for y
y=7(0)+21
y=0+21
y=21 the ordered pair (x,y)=(0,21)
:
for (-2/7, ) let x=-2/7 and solve for y
y=7(-2/7)+21
y=-2+21
y=19 The ordered pair (x,y)=(-2/7,19)
:
Happy Calculating!!!!
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