## 4x-3y=12. solve for Y Please show work

October 14, 2019// Blog//

**Answer:**

Option 1,3 and 4 are correct**.**

**Step-by-step explanation:**

Given is a quadratic equation

Marcus used quadratic formula to solve this

The correct use of formula is

for the quadratic equation

Comparing we have a =1, b =-10: c=25

The student should have substituted -10 for b but he wrong did only 10

II option is wrong since 2 is substituted correctly

III option is right -4ac i.e. the product x 4 must have been subtracted

IV option is right since repeated root is there so only one solution