Question

Medal !! FAN !! plz
which line is a graph of the equation ? -2x+5y=10?
A.line a
B.line b
C.line c
D.line d

Answer 1

graphs?

Answer 2

first put the equation in a form more familiar such as slope - intercept form => y = mx+b
so solve the equation for 'y'

Answer 3

yes @Godlovesme

Answer 4

y = (2/5)x +2

Answer 5

if the value of m is positive what direction does the line go?

Answer 6

nmv @manumben is helping :)

Answer 7

right @manumben ?

Answer 8

as you move to the right does it go up or down?

Answer 9

up @manumben

Answer 10

-2x + 5y = 10

to find the y intercept, sub in 0 for x
-2(0) + 5y = 10
5y = 10
y = 2 ....so the line crosses the y axis at (0,2)

to find the x axis, sub in 0 for y
-2x + 5(0) = 10
-2x = 10
x = -5 ... so the line crosses the x axis at (-5,0)

so look at your points (0,2) and (-5,0) and see which line goes across these points

Answer 11

yes and when the equation of a line is in 'slope intercept' form it comes from the fact the number next to 'x' is the slope and the number with out is where on the y-axis it will cross when 'x' = 0