Solve 13 and 14 and 15 sum plzz guys
I will mark u brainlist
Answers
Ans 13 - Two straight paths are represented by the lines
Write both equations in the form y = mx + c.
1) 7x - 5y = 3
it can be written as:
y = (7x - 3) / 5
or y = 7/5 x - 3/5
2) 14x -10y = 5
y = (14x - 5)/10
or y = 7/5 x - 1/2
Both lines have same gradient.
m = 7/5
it implies that they are the parallel lines and they don't cross each other.
Ans 14: equations will have infinite no. of solution when
a1 / a2 = b1 / b2 = c1 / c2
Let's find the values from above equations
a1 = k, b1 = 3, c1 = -(k-3)
a2 = 12, b2= k, c2= -k
These values must satisfy to have infinite no of solution.
k/12 = 3/k = (k-3)/k
solve k/12 = 3/k and then solve 3/k = (k-3)/k
after solving this - you'll get k=6.
Ans 15: This question is not clearly visible. Some parts of the question clipped off. But you can solve this question using the same method explained above.
Hope it helps you!