Not the exact question you were looking for?

Paste your question to our Mathbee AI Mentor below to get an instant step-by-step solution.

Pair of Linear Equations in Two Variables
RD Sharma
CBSE
Grade 10

Question:

Solve the following pair of linear equations graphically:
$x - y + 1 = 0$ and $3x + 2y - 12 = 0$.
Find the coordinates of the vertices of the triangle formed by these lines and the x-axis, and shade the triangular region.

Step-by-Step Solution

Key Concept: Line 1: $(0,1), (4,5), (-1,0)$. Line 2: $(0,6), (4,0), (2,3)$. Intersection point $(2,3)$. x-axis intercepts $(-1,0)$ and $(4,0)$. Vertices $(-1,0), (4,0), (2,3)$. Area $= \\dfrac{1}{2} \\times 5 \\times 3 = 7.5$ sq. units.
Table of points: Line 1 passes through $(-1,0), (0,1), (2,3)$. Line 2 passes through $(4,0), (0,6), (2,3)$. [1.0 Mark]
Plotting lines on graph: Intersection point is $(2,3)$. x-axis intercepts are $A(-1,0)$ and $B(4,0)$. [1.0 Mark]
Vertices of triangle: $(-1,0), (4,0), (2,3)$. Shaded region area $= 1/2 \times 5 \times 3 = 7.5$ sq. units. [1.0 Mark]

---
🎯 Official CBSE Marking Scheme:
Finding points and intersection $(2,3)$: 1.0 Mark
Plotting lines correctly on graph: 1.0 Mark
Writing vertices $(-1,0), (4,0), (2,3)$ and shading region: 1.0 Mark

Correct Answer:
Mathbee AI Mentor (Free Demo)

Confused by the solution? Ask the AI to explain a specific step, tell you where you went wrong, or break down the key trap in this question.

Master Pair of Linear Equations in Two Variables with Mathbee

Practice this topic under real exam conditions with strict timers, or ask our AI Mentor to explain the concepts step-by-step.

Start Practicing for Free