~~! multiple choice ! ~~

a line has a slope of -3 and passes through the point (4,-3)

which is the equation of the line?
a) y= -3x-15
b) y= -3x-9
c) y= -3x+9
d) y= -3x+15

Equation of straight line in slope form = 》( y-y1) = m (x - x1)

Thus here solving ....

y +3 = -3 (x-4)

=》 y+3= -3x +12

=》 y = -3x +9

option c.) y = -3x +9

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

uhhh idk u yolo?