Question

What is the equation in standard form of the line which passes through (1, −3) and has a slope of 2?

2x − y = 5

2x − y = −5

2x + y = 5

2x + y = −5

Answer 1

y = mx + b
slope(m) = 2
(1,-3)...x = 1 and y = -3
now we sub
-3 = 2(1) + b
-3 = 2 + b
-3 - 2 = b
-5 = b

so our equation is : y = 2x - 5
But we need it in standard form : Ax + By = C

y = 2x - 5 -- subtract 2x from both sides
-2x + y = 5 -- multiply by -1 to make x positive
2x - y = -5 (standard form)

Answer 2

so the answer is 2x-y=-5?

Answer 3

yep...thats the answer

Answer 4

thank you soo much

Answer 5

not a problem...happy to help :)

Answer 6

this is my last question
please help

Answer 7

What is the equation in point-slope form of the line passing through (4, 0) and (2, 6)?

y = 4x − 2

y = 2x − 4

y = −3(x − 4)

y = 3(x + 4)