Math 8th Grade Final

Folving for y and x, example 12x+7y=7

y=-12/7x+1

(Just isolate y)

Solving for Slope intercept form with Slope and a point, Example: Slope of 5 and passing through (-2,5)

(Just plug and the numbers, -2=x, 5=y and 5=M, and solve from B)

Answer:y=5x+15

Solve for point slope form with a slope and a point, Example: slope of ¾ and passing through (-3,7)

(Plug the numbers into this equation y-y1=m(x-x1), The point,example (-3,7) goes in the place of y1 and x1)

Answer: y-7=3/4(x+3)

Solve for Piont Slope form with only Pionts, Example (5,-3) and (-1,9)

(Solve for Slope and plug it into Piont slope form, 2 answers are possible.)

Find x and y intercept of and equation

(plug 0 into y to find x and 0into x to find y intercept)

Solving in quality and putting it into a number line

( if it is only on of these <,> that there will be only one line, if there is two of the like this: <x+2>, then you minus the 2 from both sides of the <,>. lastly if it looks like this, < -4 or 7t >, you solve each side separately and graph two lines.)