Ask your own question, for FREE!
Mathematics 9 Online
OpenStudy (anonymous):

i have two questions please 2) Select the equation of a line that is perpendicular to the line on the graph and passes through the point (3, 2). y = 1 over 3 x + 3 y = -1 over 3x + 3 y = 3 x + 2 y = - 1 over 3 x + 2 3) Write the equation of the line that is parallel to the line y = -3x + 12 and passes through the point (-1, 6). y = one thirdx + 7 y = -3x + 3 y = one thirdx + 3 y = -3x + 7

OpenStudy (anonymous):

OpenStudy (anonymous):

the graph is for the first one really need help.

undeadknight26 (undeadknight26):

Desmos graphing will help you with this :D

OpenStudy (anonymous):

anyone

OpenStudy (aum):

You need to find the slope of the line in the graph first. Slope = rise / run. You need to pick two suitable points on the line to find the slope.

OpenStudy (aum):

My estimate is the line crosses the x-axis at (-2/3, 0) and the y-axis at (0,2) Slope = rise / run = y-intercept / x-intercept = 2 / (-2/3) = - 2 * 3/2 = -3 Slope of the perpendicular line will be the negative reciprocal of the slope. Therefore, slope m = -1/3 y = mx + b y = -1/3x + b It passes through (3,2) put x = 3, y = 2 and solve for b.

OpenStudy (anonymous):

like i know it would be over something bc C a stupid answer

OpenStudy (anonymous):

so the b would be the 2 right

OpenStudy (aum):

y = -1/3x + b It passes through (3,2) when x = 3, y = 2 2 = -1/3 * 3 + b 2 = -1 + b b = 3 y = -1/3x + 3

OpenStudy (aum):

For #3) What is the slope of the line y = -3x + 12 ?

OpenStudy (anonymous):

explain a little

OpenStudy (aum):

y = -3x + 12 Compare it to the general formula y = mx + b where m is the slope. Therefore, slope of the line y = -3x + 12 is ?

OpenStudy (anonymous):

it would be y=-3x+7

OpenStudy (anonymous):

nvm i got it

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!