Please help! was due 2 weeks ago!

7. y = 2x + 7

8. y = -3x - 4

9. y = -5x - 34

10. y = 2/5x + 6/5

11. y = 1/4x + 4.5

12. y = -2x

Step-by-step explanation:

to find the slope-intercept formula of these charts: (i'm guessing that that's what your teacher wants? you forgot to include their directions in the images)

you need to use y = mx + b

to find m, you take two coordinates and then do (y2 - y1)/(x2 - x1)

to find b, figure out what y is when x = 0.

you can either do this by looking at the chart and finding 0 on the x side, or if that isn't there, take a different point and insert the y and x values into what you have so far. if you enter the points correctly and have an m, the only letter you should have left is b. so all you'd need to do from there is solve the equation for b!

hope this helped!!

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b