Ask your own question, for FREE!
Mathematics 7 Online
TETSXPREME:

help

TETSXPREME:

1 attachment
snowflake0531:

firstly, if two lines are parallel, they have the same slope

snowflake0531:

so which two choices can you eliminate?

TETSXPREME:

this fat cat says C

snowflake0531:

you can eliminate another too

TETSXPREME:

this fat cat says B

snowflake0531:

nope

snowflake0531:

the slope has to be -3

TETSXPREME:

This fat cat does not understand this

snowflake0531:

y = mx + b where m is the slope

snowflake0531:

the equation y = -3x + 7 means that the slope is negative 3 and the y-intercept is 7

TETSXPREME:

this fat cat says he sees no slope

snowflake0531:

parallel lines have the same slope the slope of y= -3x + 7 is -3 the slope of y = 3x + 14 is 3 the slope of y = -3x + 2 is -3 the slope of y =1/3 x + 4 2/3 is 1/3 the slope of y= -3x + 10 is -3 so which equations have a slope of -3...

TETSXPREME:

This fat cat says B

TETSXPREME:

This fat cat says also D

snowflake0531:

Yeah so slope is -3 Now we have to find the y-intercept using the slope and the coordinate point substitute the x y values into the equation (2,-4) y=mx+ b -4 = -3(2) + b can you solve for b?

TETSXPREME:

no

snowflake0531:

what is -3 times 2

TETSXPREME:

-6?

snowflake0531:

yes so -4 = -6 + b what is -4 plus 6

TETSXPREME:

2?

snowflake0531:

yes the b is 2 the equation is y = -3x + 2

TETSXPREME:

b is correcto?

snowflake0531:

si

TETSXPREME:

gracias c;

snowflake0531:

de nada

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!