Find the slope of the line between (-7,-2) and (9,4) a)-3/8 b)3/8 c)6/17 d)2/5 find the slope of the line between (5,-6) and (-1,8) a)-7/3 b)-3/7 c)-14/5 d)-13/6 find the slope of the line y=1/8x-1 a)-8/1 b)1/8 c)1 d)-1 find the y-intercept of the following equation y=7/2x-10/7 a)7/2 b)-7/2 c)10/7 d)-10/7 plz my i don’t get it worth 18 points thx i’m really struggling plz

B, A, B, D

to calculate the slope m use the gradient formula

m = ( y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 7, - 2) and (x₂, y₂ ) = (9, 4)

m = = =

repeat with (x₁, y₁ ) = (5, - 6) and (x₂, y₂) = (- 1, 8)

m = = = -

the equation of a line in slope-intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = x - 1 is in this form

with slope m =

To find the y- intercept , let x = 0, in the equation

x = 0 : y = 0 - = - ← y- intercept

x -

median = 1.25

range = 12-14.5

interquartile = q12-q14.5

y -

median = 1

range = 15-17

interquartile = q15-q17

the function makes a strait line horizontally with no x intercept but a y intercept at 9.