Graphically, the pair of equations 7x-y = 5; 21x -3y = 10 represents two lines which are a) intersecting at one point b) parall

Question

Graphically, the pair of equations 7x-y = 5; 21x -3y = 10 represents two lines which are
a) intersecting at one point
b) parallel
c) intersecting at two points
d) coincident

in progress 0
Elliana 1 month 2021-08-14T03:19:44+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-14T03:20:55+00:00

    ANSWER

    The equations are x=a and y=b.

    The graph of x=a is a line parallel to y-axis and y=b is a line parallel to x-axis.

    ∴ the angle between them is 90

    o

    , i.e. they intersect.

    So, the equations are consistent.

    Now solving simultaneously, the solution is (a,b).

    So, the point of intersection is (a,b).

    Hence, option D is correct.

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )