Find the slope from the equation of the line described. i need answer for 15 16 17 18 19 20 21 22

15through (4,-1,) parallel to y= negative 3/4x
16through (4,5,) parallel to y= negative 1/4x negative 4
17through (-2,-5,) parallel to y= x + 3
18through (4,-4,) parallel to y= 3
19through (-3,-3,) perpendicular to y= negative 3/8x negative 2
20through (0,-4,) perpendicular to y= negative 3/2x plus 1
21through (1,-3,) perpendicular to y= negative x
22through (2,4,) perpendicular to y= negative x plus 5

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

Which of the following points is collinear with (-2,1) and (0,3)

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2