Question

Which shows 4x + 2y = -16 in slope-intercept form?

1. y = 2x -8
2. y = -2x -8
3. y = 1/2x -8
4. y = 1/2x -16


Which pair of lines is perpendicular?

1. 10y = -9 and y = -9/10x +6
2. -4x +5y = -5 and y = -4/5x +7
3. -8/3x +9 = y and 8y = 3x -32
4. y = -5x +2 and y + -5x -1/2


A line has a slope of -3 and passes through the point (5, -1). What is the equation of the line?

1. -3x + y= -16
2. -3x + y= -2
3. 3x + y= 2
4. 3x + y= 14

Answer 1

do u have any idea

Answer 2

no @dayakar

Answer 3

1)slope intercept form is
y=mx+b [here m is slope and b is y-intercept]
we have to change the equation into above form
can u do it

Answer 4

step 1)divide each term with 2
step 2) add -2x both sides
u can get the answer

Answer 5

2) if product of slopes of two lines = -1
then
the two lines are perpendicular

Answer 6

3)equation of the line whose slope (m) = -3 and passing through the point (x1 ,y1) = (5, -1) is
y- y1 = m (x- x1)
replace m, x1, y1 with given values and simplify it