How To Solve Y = 5x -3 For x = -4,0 & +4 ?

2009-01-11 2:58 pm

回答 (6)

2009-01-11 3:14 pm
✔ 最佳答案
y = 5x - 3 (x = -4)
y = 5(-4) - 3
y = -20 - 3
y = -23

y = 5x - 3 (x = 0)
y = 5(0) - 3
y = 0 - 3
y = -3

y = 5x - 3
y = 5(4) - 3
y = 20 - 3
y = 17
2009-01-11 11:04 pm
Y=-23,-3,17
2009-01-11 11:03 pm
y = - 20 - 3 = - 23
and
y = 20 - 3 = 17
2009-01-11 11:03 pm
Substiute you X values into the equation then work it out from there.
2009-01-11 11:03 pm
when x = -4:

y = (5*-4) - 3
y = -23

when x = 0:

y = (5*0) - 3
y = -3

when x = 4:

y = (5*4) - 3
y = 17

* denotes multiplication
2009-01-11 11:03 pm
Put -4 and 4 in for x in the equation.

y = 5 (-4) -3
y=5 (4) -3


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