Calculate points of intersection of the following two pairs of equations.
y=5x+6 and y=9x-32
y=-0,5x+1,5 and y=-4(x-3)
We need the point(s) where y = 5x+6 equals y = 9x-32
or 5x+6 = 9x-32 solve for x add 32 to each side of the equation
5x+38 = 9x subtract 5x from both sides
38 = 4 x
9.5 = x Now substitute theis 'x' into one of the equations to find 'y'
y= 5(9.5) +6 y= 53.5 so x,y = 9.5 , 53.5
(you can sub 'x' in to the other equation to see if you get the same result as a check)
0.5x+1.5= -4(x-3)
= -4x +12 add 4x to both sides
4.5x +1.5 =12 Subtract 1.5 from both sides
4.5x = 10.5 Divide by 4.5
x = 2 1/3
then sub this 'x' in to one of the other equations to find 'y'
y=-4(x-3)=-4x+12
= -4 (2 1/3) + 12 = 2 2/3 x,y = 2 1/3 , 2 2/3
We need the point(s) where y = 5x+6 equals y = 9x-32
or 5x+6 = 9x-32 solve for x add 32 to each side of the equation
5x+38 = 9x subtract 5x from both sides
38 = 4 x
9.5 = x Now substitute theis 'x' into one of the equations to find 'y'
y= 5(9.5) +6 y= 53.5 so x,y = 9.5 , 53.5
(you can sub 'x' in to the other equation to see if you get the same result as a check)
0.5x+1.5= -4(x-3)
= -4x +12 add 4x to both sides
4.5x +1.5 =12 Subtract 1.5 from both sides
4.5x = 10.5 Divide by 4.5
x = 2 1/3
then sub this 'x' in to one of the other equations to find 'y'
y=-4(x-3)=-4x+12
= -4 (2 1/3) + 12 = 2 2/3 x,y = 2 1/3 , 2 2/3